The above-mentioned item is a high-quality battery for your Hewlett-Packard EliteBook 840. It is an excellent replacement battery for your existing or defective Hewlett-Packard EliteBook 840 battery. It can also serve as an additional spare battery for on-the-go use. Handling and charging are as straightforward as usual with the standard power supply or charger. A high level of safety is provided by the protection electronics against overcharging and short circuits. The use of high-quality cells allows for a greater number of charge-discharge cycles, which means a longer lifespan for your new Hewlett-Packard EliteBook 840 battery. Quality is our top priority. This means all batteries are new and unused. Our own quality assurance ensures a high standard of quality. Note: Unless we explicitly state that this is an original product, we supply a compatible product. This means it is by no means an original product from the manufacturer and is therefore not produced or recommended by them. All brand and product names belong to their respective owners and are used solely for compatibility description.